笔者在长期的初中数学教学实践中经常对其中的一些知识版块进行复习归纳和总结,以便于学生在理解的基础上牢记这些知识点,下面这首函数图象七字歌就是基于这个目的而写的,这当中就对初中数学中的四种线性函数的图象形状、位置和性质做了一个比较形象的概括,希望在此与有此兴趣的各位同仁互相交流。 The author in the long-term practice of junior high school mathematics often some of the knowledge section review summarized and summarized in order to facilitate students to remember these knowledge points on the basis of understanding, the following function of the image of the first seven words is written for this purpose , Which made a comparative summary of the image shape, position and nature of the four linear functions in the mathematics of junior high school. I hope to share with colleagues who are interested in this.